Siphon strainer or the like



July 24,1934. c. A. scHAcH'r SIPHON STRAINER OH THE LIKE Filed Feb. 5, 1933 Patented July 24, 1934 p 1,967,785 p l v sIPHoN s'rnaiNEn on THE lLIKE Clifford A. schacht,rmnnngtommd.

Application February A3, 1933,

serial No. 655,089

This invention is a novel improvement in strainers particularly adapted to be used at the intake ends of siphon tubes or the like, to prevent any sediment from being carried over by the tubes from the receptacle to the container which is being filled.

The principal objects of the invention are to provide a Siphon stra'ner consisting of a hollow body of pliable rubber, molded in one piece, havling a contracted upper end adapted to be entered into the inlet end of a siphon tube; a metallic or molded rubber cup-shaped casing being interlocked with the body and forming or retaining a screening member and also maintain-V ing the body in shape.

A further object of the invention is to provide the molded rubber body with an integral exterior flange covering the rough unfinished upper edge of the casing, thereby enhancing the appearance of the strainer.

Further objects of the invention are to provide a siphon strainer which, although madevof soft pliable rubber, will not warp out of shape and become worthless after short use; also to provide a strainer which is easy to manufacture, and will have the appearance of a. one-piece strainer.

Other minor objects of the invention will be hereinafter set forth.

I will explain the invention with reference to the accompanying drawing which illustrates several practical embodiments thereof toenable others to adopt and use the same; land will surnmarize in the claims the novel features of construction, and novel combinations of parts, for which protection is desired. -Y

In said drawing:

Fig. 1 is a longitudinal section through one form of strainer showing same applied to the end of a siphon tube.

Fig. 2 is a plan View of the strainer shown in Fig. 1.

Figs. 3 and 4. are longitudinal sections through modified forms of the strainer, provided with metallic cup-shaped casings forming or retaining the straining elements, the casings being mounted on or in the molded rubber body.

Figs. 5 and 6 are longitudinal sections through further modified forms in which the casings retaining the straining elements are made of molded rubber and mounted upon the molded rubber body.

Figs. 'l and 8 are longitudinal sections through still further modified forms in which the casings are made of metal.

v Ii' desired the 'screens As show n in Figs. is made of two parts.

outer end by a plate la, havin perforations 1b punched therein. the part 1 are preferably threa 1 and 2, the siphon strainer y 'I *he outer metallic part 1k is substantiallyy cup-shaped and Vclosed at its g Ya plurality ofv The walls of ded or corrugated as at 1c for the purpose of increasing the friction between the walls of the casing 1 and those of Ythe inner rubber body l2-v rubber, the same being ends, and of fit withinthe walls of casing 1. Y l

a contracted neck 2a adapted to end of body 2 1s fit within the inlet end of a siphon hose hollow an Body 2 is reduced end 2d of rubber body 2 shoul slightly larger than the internal diameter vof of molded dopen at both such diameter as to make a tight the upper I-I. The d be made hose I-I so that when insertedtherein the body will be rmly and hose. By forming frictionally en instead of metal, a veryinexpensive neck 2a, is molded,

provided as the contracted whereas ii made of Ametal, the

y gaged with the. the body 1 of molded rubber,

article is formation of 'the4 neck would involve a considerably more expensive operation. Between the perforated plate la ofvcasing 1 and more wire screens the. end ofthe body 2 one or 3 of fine mesh may be placed,

to assist the perforated plate 1a'l in iiltering or` straining the liquid passing into hose H.

may be omitted. The

side walls of the rubberbody 2 can be molded with plain sides, or or corrugated as shown at the threads or corrugations the sides can kbe threaded. 2b to correspond with 1c oi the casing ,1

and frictionally maintain the body `engaged with the casing. v

In`Fig.-3 a modiedstrainer is shown inwhich an'eXterior annular v 4 rubber body 12 adaptedl to end ofthe metallic casing the appearance of the strainer.

The

ange 12b isv formed on the .cover the inner rough 11, thereby enhancing parts are otherwise substantially the same as those of Fig. 1, the walls of the inner and outer casing being threaded or corrugated as shown at llc, 12b; and

the screen or screens -13 the lower end oi body 12 and the plate 11a of casing 11.

being positioned between perforated end In Fig. 4 the strainer is substantially the same as that shown in Fig. 3, except that the rubber body 22 is made of larger metallic casing 21.

diameter than the The rubber body is stretched over the metallic casing 21 and completely hides the latter. rubber body In this modicaticn the walls of the 22 may be smooth, or may be threaded or corrugated as at 22o to engage the threads 21o on the metallic Casing 2 1.

The end one as desired, or the ange 32e of Width equal to the thicknessof the walls of casing 31, the Iiange covering the end of the casing 31 and giving the strainer the appearance of a one-piece article. Flange32c however may be omitted if desired. The parts 31, 32 could be cemented together, or could be'made With-interengaging threads or corrugations 31h- 3212 forV locking the same together. If desired aj wire screen 34 may be also used with the perforated plate 33. l

In Fig. 6 a still further modified form of strainer is shown in which the perforated plate 33 (Fig. 5) is omitted, and a Wire screen 43 is used instead. The outer casing 41 of molded rubber has the internal annular ange 41a at its outer end. The side Walls of the casing 41 are smooth and the casing is cemented' to the body 42 -by cement 44. The molded rubber body same as that shown in Fig. 5. The rubber members may be made of Arubber stock of diierent hardnesses.

VIn Fig. 7 the molded rubber body 52 is substantially the same as in Fig. 3, the body having an external annular bead 52b for covering the end of casing 51. The reduced neck 52a is provided With an external bead 52a intermediate its ends for preventing the hose H from being readily pulled off of the neck when assembled. The side Walls of the body engaging the casing 51 are preferably smooth, but may be roughened or corrugated if desired. 'I'he casing 51 preferably has smooth side Walls, and at the outer end of the casing is an annular internal flange 51a forming Y a seat or shoulder for retaining the screen'or screens 53 against the end of the body 52. The metallic casing 51 is made slightly smaller in diameter than the diameter of the body 52, and

when slipped over the end of the body the 'casing will be retained thereon by friction and by the resiliency of the rubber of the body 52; lor the edge of the body 5'1 could be rolled in as at 51a: (Fig. 8) to assist in holding the parts together; or the casing 52 could be glued or cemented onto the body 52.

In my strainers the body of molded rubber is inexpensively formed, and is molded with a reduced neck for insertion in the end of hose H. The necks of the rubber bodies may be made in 42 is substantially the' different sizes to t diiferent sizes of hose I-I. The iiange, projecting over the rim of the outer casing not only covers the sharp edge of the metal, but also enhances the appearance of the strainer. The sides of the body and casing may be made smooth, or may be threaded or corrugated to prevent the parts from becoming disengaged when in use, and the resiliency of the rubber will assist in holding the partstogether.

I claim:-

1. A liquid strainer for Siphon tubes and the like, comprising a hollow body of soft molded rub- `ber open at both ends and having one end reduced to enter the end of the tube; a cylindrical casing engaging the other end of the body, and meansV associated with the casing for straining liquid entering the body, the resiliency of the rubber lretaining the casing on the body.

2. In a strainer as set forth in claim 1, the casing enclosing the end of the body; and the body having an exterior annular flange covering the end of the casing 3. In a strainer as set forth in claim l, the casing having an internal annular shoulder; and said means comprising one or more'screens sup-- ported upon the shoulder. 4. In a strainer as set forth in claim 1, said casing being of molded rubber enclosing the end of the body and having an internal annular shoulder; and said means comprising one or more screens interposed between the end of the body and the shoulder. y

5. In a strainer as set forth in claim 1, the bodyhaving an external flange at its upper endgand said casing enclosing the end ofthe body and having an internal annular shoulder at its outer end; and said means comprising a screen-interposed between the end of the body'and the shoul-v der; and the flange on said body extendingto-the outer Walls of the casing." .l v 6. In a strainer as set forth in claiin 1,-the body having'an external flange at its upper-end; and

said casing being of molded rubber adapted to t over the end of the body -anol having 'an in# ternal annular shoulder at its outer end; and said means comprising a. screen interposed between the end of the body and the shoulder; and thel ilange on saidbody extending to the outer walls of the casing. g -V 7. In a strainer as set forth inYclairn 1,tne inner edge of the casing being rolledinvvardly to assist in locking the casing on the body.

8. In a strainer aslsetforth in Vclaim l; theinner edgev of the casing being rolled'inwardly to" assist in locking the casing on the body; `and the body having an external flange covering the in Wardly rolled edge of the casing. Y

y CLIFFORD-A. SCI-IACHT.

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